[PATCH 12/15] ARM: clps711x: autcpu12: Special driver for handling NAND memory is removed
Alexander Shiyan
shc_work at mail.ru
Thu Nov 1 05:26:42 EDT 2012
This patch provide migration to using "gpio-nand" and "basic-mmio-gpio"
drivers instead of using special driver for handling NAND memory.
Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
---
arch/arm/mach-clps711x/autcpu12.c | 99 ++++++++++
arch/arm/mach-clps711x/include/mach/autcpu12.h | 10 -
drivers/mtd/nand/Kconfig | 7 -
drivers/mtd/nand/Makefile | 1 -
drivers/mtd/nand/autcpu12.c | 237 ------------------------
5 files changed, 99 insertions(+), 255 deletions(-)
delete mode 100644 drivers/mtd/nand/autcpu12.c
diff --git a/arch/arm/mach-clps711x/autcpu12.c b/arch/arm/mach-clps711x/autcpu12.c
index 8f9b2e0..8e2f61b 100644
--- a/arch/arm/mach-clps711x/autcpu12.c
+++ b/arch/arm/mach-clps711x/autcpu12.c
@@ -23,9 +23,13 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/io.h>
+#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand-gpio.h>
#include <linux/platform_device.h>
+#include <linux/basic_mmio_gpio.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
@@ -43,6 +47,15 @@
#define AUTCPU12_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define AUTCPU12_CS8900_IRQ (IRQ_EINT3)
+#define AUTCPU12_SMC_BASE (CS1_PHYS_BASE + 0x06000000)
+#define AUTCPU12_SMC_SEL_BASE (AUTCPU12_SMC_BASE + 0x10)
+
+#define AUTCPU12_MMGPIO_BASE (CLPS711X_NR_GPIO)
+#define AUTCPU12_SMC_NCE (AUTCPU12_MMGPIO_BASE + 0) /* Bit 0 */
+#define AUTCPU12_SMC_RDY CLPS711X_GPIO(1, 2)
+#define AUTCPU12_SMC_ALE CLPS711X_GPIO(1, 3)
+#define AUTCPU12_SMC_CLE CLPS711X_GPIO(1, 3)
+
static struct resource autcpu12_cs8900_resource[] __initdata = {
DEFINE_RES_MEM(AUTCPU12_CS8900_BASE, SZ_1K),
DEFINE_RES_IRQ(AUTCPU12_CS8900_IRQ),
@@ -59,6 +72,81 @@ static struct platform_device autcpu12_nvram_pdev __initdata = {
.num_resources = ARRAY_SIZE(autcpu12_nvram_resource),
};
+static struct resource autcpu12_nand_resource[] __initdata = {
+ DEFINE_RES_MEM(AUTCPU12_SMC_BASE, SZ_16),
+};
+
+static struct mtd_partition autcpu12_nand_parts[] __initdata = {
+ {
+ .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = SZ_8M,
+ },
+ {
+ .name = "AUTCPU12 flash partition 2",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static void __init autcpu12_adjust_parts(struct gpio_nand_platdata *pdata,
+ size_t sz)
+{
+ switch (sz) {
+ case SZ_16M:
+ case SZ_32M:
+ break;
+ case SZ_64M:
+ case SZ_128M:
+ pdata->parts[0].size = SZ_16M;
+ break;
+ default:
+ pr_warn("Unsupported SmartMedia device size %u\n", sz);
+ break;
+ }
+}
+
+static struct gpio_nand_platdata autcpu12_nand_pdata __initdata = {
+ .gpio_rdy = AUTCPU12_SMC_RDY,
+ .gpio_nce = AUTCPU12_SMC_NCE,
+ .gpio_ale = AUTCPU12_SMC_ALE,
+ .gpio_cle = AUTCPU12_SMC_CLE,
+ .gpio_nwp = -1,
+ .chip_delay = 20,
+ .parts = autcpu12_nand_parts,
+ .num_parts = ARRAY_SIZE(autcpu12_nand_parts),
+ .adjust_parts = autcpu12_adjust_parts,
+};
+
+static struct platform_device autcpu12_nand __initdata = {
+ .name = "gpio-nand",
+ .id = -1,
+ .resource = autcpu12_nand_resource,
+ .num_resources = ARRAY_SIZE(autcpu12_nand_resource),
+ .dev = {
+ .platform_data = &autcpu12_nand_pdata,
+ },
+};
+
+static struct resource autcpu12_mmgpio_resource[] __initdata = {
+ DEFINE_RES_MEM_NAMED(AUTCPU12_SMC_SEL_BASE, SZ_1, "dat"),
+};
+
+static struct bgpio_pdata autcpu12_mmgpio_pdata __initdata = {
+ .base = AUTCPU12_MMGPIO_BASE,
+ .ngpio = 8,
+};
+
+static struct platform_device autcpu12_mmgpio __initdata = {
+ .name = "basic-mmio-gpio",
+ .id = -1,
+ .resource = autcpu12_mmgpio_resource,
+ .num_resources = ARRAY_SIZE(autcpu12_mmgpio_resource),
+ .dev = {
+ .platform_data = &autcpu12_mmgpio_pdata,
+ },
+};
+
static void __init autcpu12_init(void)
{
platform_device_register_simple("uart-clps711x", 0, NULL, 0);
@@ -68,14 +156,25 @@ static void __init autcpu12_init(void)
platform_device_register_simple("cs89x0", 0, autcpu12_cs8900_resource,
ARRAY_SIZE(autcpu12_cs8900_resource));
+ platform_device_register(&autcpu12_mmgpio);
+
platform_device_register(&autcpu12_nvram_pdev);
}
+static void __init autcpu12_init_late(void)
+{
+ if (IS_ENABLED(MTD_NAND_GPIO) && IS_ENABLED(GPIO_GENERIC_PLATFORM)) {
+ /* We are need both drivers to handle NAND */
+ platform_device_register(&autcpu12_nand);
+ }
+}
+
MACHINE_START(AUTCPU12, "autronix autcpu12")
/* Maintainer: Thomas Gleixner */
.atag_offset = 0x20000,
.map_io = clps711x_map_io,
.init_machine = autcpu12_init,
+ .init_late = autcpu12_init_late,
.nr_irqs = CLPS711X_NR_IRQS,
.init_irq = clps711x_init_irq,
.handle_irq = clps711x_handle_irq,
diff --git a/arch/arm/mach-clps711x/include/mach/autcpu12.h b/arch/arm/mach-clps711x/include/mach/autcpu12.h
index b077abd..0452f5f 100644
--- a/arch/arm/mach-clps711x/include/mach/autcpu12.h
+++ b/arch/arm/mach-clps711x/include/mach/autcpu12.h
@@ -40,8 +40,6 @@
#define AUTCPU12_PHYS_CSAUX1 CS1_PHYS_BASE +0x04000000 /* physical */
-#define AUTCPU12_PHYS_SMC CS1_PHYS_BASE +0x06000000 /* physical */
-
#define AUTCPU12_PHYS_CAN CS1_PHYS_BASE +0x08000000 /* physical */
#define AUTCPU12_PHYS_TOUCH CS1_PHYS_BASE +0x0A000000 /* physical */
@@ -50,14 +48,6 @@
#define AUTCPU12_PHYS_LPT CS1_PHYS_BASE +0x0E000000 /* physical */
-/*
-* defines for smartmedia card access
-*/
-#define AUTCPU12_SMC_RDY (1<<2)
-#define AUTCPU12_SMC_ALE (1<<3)
-#define AUTCPU12_SMC_CLE (1<<4)
-#define AUTCPU12_SMC_PORT_OFFSET PBDR
-#define AUTCPU12_SMC_SELECT_OFFSET 0x10
/*
* defines for lcd contrast
*/
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index a803d9b..7aff98a 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -49,13 +49,6 @@ config MTD_NAND_MUSEUM_IDS
NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
of these chips were reused by later, larger chips.
-config MTD_NAND_AUTCPU12
- tristate "SmartMediaCard on autronix autcpu12 board"
- depends on ARCH_AUTCPU12
- help
- This enables the driver for the autronix autcpu12 board to
- access the SmartMediaCard.
-
config MTD_NAND_DENALI
tristate "Support Denali NAND controller"
help
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 44fca05..d2bd10b 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -11,7 +11,6 @@ obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o
obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o
obj-$(CONFIG_MTD_NAND_SPIA) += spia.o
obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o
-obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o
obj-$(CONFIG_MTD_NAND_DENALI) += denali.o
obj-$(CONFIG_MTD_NAND_DENALI_PCI) += denali_pci.o
obj-$(CONFIG_MTD_NAND_DENALI_DT) += denali_dt.o
diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c
deleted file mode 100644
index 04769a4..0000000
--- a/drivers/mtd/nand/autcpu12.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/*
- * drivers/mtd/autcpu12.c
- *
- * Copyright (c) 2002 Thomas Gleixner <tgxl at linutronix.de>
- *
- * Derived from drivers/mtd/spia.c
- * Copyright (C) 2000 Steven J. Hill (sjhill at realitydiluted.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Overview:
- * This is a device driver for the NAND flash device found on the
- * autronix autcpu12 board, which is a SmartMediaCard. It supports
- * 16MiB, 32MiB and 64MiB cards.
- *
- *
- * 02-12-2002 TG Cleanup of module params
- *
- * 02-20-2002 TG adjusted for different rd/wr address support
- * added support for read device ready/busy line
- * added page_cache
- *
- * 10-06-2002 TG 128K card support added
- */
-
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/partitions.h>
-#include <asm/io.h>
-#include <mach/hardware.h>
-#include <asm/sizes.h>
-#include <mach/autcpu12.h>
-
-/*
- * MTD structure for AUTCPU12 board
- */
-static struct mtd_info *autcpu12_mtd = NULL;
-static void __iomem *autcpu12_fio_base;
-
-/*
- * Define partitions for flash devices
- */
-static struct mtd_partition partition_info16k[] = {
- { .name = "AUTCPU12 flash partition 1",
- .offset = 0,
- .size = 8 * SZ_1M },
- { .name = "AUTCPU12 flash partition 2",
- .offset = 8 * SZ_1M,
- .size = 8 * SZ_1M },
-};
-
-static struct mtd_partition partition_info32k[] = {
- { .name = "AUTCPU12 flash partition 1",
- .offset = 0,
- .size = 8 * SZ_1M },
- { .name = "AUTCPU12 flash partition 2",
- .offset = 8 * SZ_1M,
- .size = 24 * SZ_1M },
-};
-
-static struct mtd_partition partition_info64k[] = {
- { .name = "AUTCPU12 flash partition 1",
- .offset = 0,
- .size = 16 * SZ_1M },
- { .name = "AUTCPU12 flash partition 2",
- .offset = 16 * SZ_1M,
- .size = 48 * SZ_1M },
-};
-
-static struct mtd_partition partition_info128k[] = {
- { .name = "AUTCPU12 flash partition 1",
- .offset = 0,
- .size = 16 * SZ_1M },
- { .name = "AUTCPU12 flash partition 2",
- .offset = 16 * SZ_1M,
- .size = 112 * SZ_1M },
-};
-
-#define NUM_PARTITIONS16K 2
-#define NUM_PARTITIONS32K 2
-#define NUM_PARTITIONS64K 2
-#define NUM_PARTITIONS128K 2
-/*
- * hardware specific access to control-lines
- *
- * ALE bit 4 autcpu12_pedr
- * CLE bit 5 autcpu12_pedr
- * NCE bit 0 fio_ctrl
- *
- */
-static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
- unsigned int ctrl)
-{
- struct nand_chip *chip = mtd->priv;
-
- if (ctrl & NAND_CTRL_CHANGE) {
- void __iomem *addr;
- unsigned char bits;
-
- bits = clps_readb(AUTCPU12_SMC_PORT_OFFSET) & ~0x30;
- bits |= (ctrl & NAND_CLE) << 4;
- bits |= (ctrl & NAND_ALE) << 2;
- clps_writeb(bits, AUTCPU12_SMC_PORT_OFFSET);
-
- addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET;
- writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr);
- }
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, chip->IO_ADDR_W);
-}
-
-/*
- * read device ready pin
- */
-int autcpu12_device_ready(struct mtd_info *mtd)
-{
- return clps_readb(AUTCPU12_SMC_PORT_OFFSET) & AUTCPU12_SMC_RDY;
-}
-
-/*
- * Main initialization routine
- */
-static int __init autcpu12_init(void)
-{
- struct nand_chip *this;
- int err = 0;
-
- /* Allocate memory for MTD device structure and private data */
- autcpu12_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
- GFP_KERNEL);
- if (!autcpu12_mtd) {
- printk("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
- err = -ENOMEM;
- goto out;
- }
-
- /* map physical address */
- autcpu12_fio_base = ioremap(AUTCPU12_PHYS_SMC, SZ_1K);
- if (!autcpu12_fio_base) {
- printk("Ioremap autcpu12 SmartMedia Card failed\n");
- err = -EIO;
- goto out_mtd;
- }
-
- /* Get pointer to private data */
- this = (struct nand_chip *)(&autcpu12_mtd[1]);
-
- /* Initialize structures */
- memset(autcpu12_mtd, 0, sizeof(struct mtd_info));
- memset(this, 0, sizeof(struct nand_chip));
-
- /* Link the private data with the MTD structure */
- autcpu12_mtd->priv = this;
- autcpu12_mtd->owner = THIS_MODULE;
-
- /* Set address of NAND IO lines */
- this->IO_ADDR_R = autcpu12_fio_base;
- this->IO_ADDR_W = autcpu12_fio_base;
- this->cmd_ctrl = autcpu12_hwcontrol;
- this->dev_ready = autcpu12_device_ready;
- /* 20 us command delay time */
- this->chip_delay = 20;
- this->ecc.mode = NAND_ECC_SOFT;
-
- /* Enable the following for a flash based bad block table */
- /*
- this->bbt_options = NAND_BBT_USE_FLASH;
- */
- this->bbt_options = NAND_BBT_USE_FLASH;
-
- /* Scan to find existence of the device */
- if (nand_scan(autcpu12_mtd, 1)) {
- err = -ENXIO;
- goto out_ior;
- }
-
- /* Register the partitions */
- switch (autcpu12_mtd->size) {
- case SZ_16M:
- mtd_device_register(autcpu12_mtd, partition_info16k,
- NUM_PARTITIONS16K);
- break;
- case SZ_32M:
- mtd_device_register(autcpu12_mtd, partition_info32k,
- NUM_PARTITIONS32K);
- break;
- case SZ_64M:
- mtd_device_register(autcpu12_mtd, partition_info64k,
- NUM_PARTITIONS64K);
- break;
- case SZ_128M:
- mtd_device_register(autcpu12_mtd, partition_info128k,
- NUM_PARTITIONS128K);
- break;
- default:
- printk("Unsupported SmartMedia device\n");
- err = -ENXIO;
- goto out_ior;
- }
- goto out;
-
- out_ior:
- iounmap(autcpu12_fio_base);
- out_mtd:
- kfree(autcpu12_mtd);
- out:
- return err;
-}
-
-module_init(autcpu12_init);
-
-/*
- * Clean up routine
- */
-static void __exit autcpu12_cleanup(void)
-{
- /* Release resources, unregister device */
- nand_release(autcpu12_mtd);
-
- /* unmap physical address */
- iounmap(autcpu12_fio_base);
-
- /* Free the MTD device structure */
- kfree(autcpu12_mtd);
-}
-
-module_exit(autcpu12_cleanup);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Thomas Gleixner <tglx at linutronix.de>");
-MODULE_DESCRIPTION("Glue layer for SmartMediaCard on autronix autcpu12");
--
1.7.8.6
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